.btn {
 	padding: 10px 20px;
 	background-color: #4CAF50;
 	color: white;
 	border: none;
 	border-radius: 4px;
 	cursor: pointer;
 	font-size: 16px;
 	margin-right: 10px;
 }

 .btn:hover {
 	background-color: #45a049;
 }

 /* 弹窗样式 */
 .modal {
 	position: fixed;
 	top: 0;
 	left: 0;
 	width: 100%;
 	height: 100%;
 	background-color: rgba(0, 0, 0, 0.5);
 	/* 半透明背景 */
 	z-index: 1000;
 	overflow: auto;
 }

 .modal-content {
 	background-color: white;
 	margin: 10% auto;
 	padding: 20px;
 	border-radius: 8px;
 	width: 80%;
 	max-width: 500px;
 	box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
 	animation: fadeIn 0.3s;
 }

 @keyframes fadeIn {
 	from {
 		opacity: 0;
 	}

 	to {
 		opacity: 1;
 	}
 }

 .modal-header {
 	display: flex;
 	justify-content: space-between;
 	align-items: center;
 	margin-bottom: 15px;
 }

 .modal-title {
 	font-size: 20px;
 	font-weight: bold;
 }

 .close-btn {
 	color: #aaa;
 	font-size: 28px;
 	font-weight: bold;
 	cursor: pointer;
 }

 .close-btn:hover {
 	color: black;
 }

 .modal-body {
 	margin-bottom: 20px;
 }

 .modal-footer {
 	text-align: right;
 }
